Looking for Feedback on Book Covers

Which book cover do you prefer?

I'm working on a new diaper lover book and of the four cover images I've worked up, one needs to be selected. Which do you prefer? Please click on the link to go to opinionstage.com to cast your vote.

https://www.opinionstage.com/botox/which-book-cover-do-you-prefer

I think if you are talking, flat out diaper lover book, you need to go with the most obvious. The photo with, the big bulging diaper showing. That’s the one that, says “ not only do I wear a diaper, but there’s no doubt, I enjoy it.” Any less, and it could just be, someone who needs to wear a diaper, and got careless with it being exposed. The photo needs to, scream diaper lover!

Before reading the comments by Luvs It, I voted for the one he indicates is his choice. If I want to read a book about diapers, the picture showing the most diaper is what would get my attention. I agree with what Luvs It had to say.